$PHOT photon

Latest papers

1. Tunable hyperbolic metamaterials for brightening single-photon emission physics.optics · 24 Sep · 3 hits

   …factor itself as a figure of merit. Here we systematically evaluate spontaneous emission enhancement and photon outcoupling in metal-dielectric HMMs (TiO$_2$/Ag and phase-change Sb$_2$S$_3$/Ag) using effective…

2. Separating coherent and incoherent photoproduction at an Electron-Ion Collider: Comparing lead, gold and silver beams hep-ex · 24 Sep · 4 hits

   …experiments at the future Electron-Ion Collider (EIC). In this article, we study nuclear de-excitation via photon emission, and see how the finite photon detection efficiency leads to misidentification of incoherent…

3. The Optical Expansion Scalar in Cosmological Perturbation Theory astro-ph.CO · 24 Sep · 1 hit

   …\equiv \theta/\omega_o$, where $\theta$ is Sachs' optical expansion scalar, and $\omega_o$ the observed photon frequency. We then derive the linear perturbative expression and angular power spectrum for…

4. Gravitational spin Hall effect in the Reissner-Nordstr\"om black holes: evolution equations and charge effects gr-qc · 24 Sep · 2 hits

   …the magnitude of the dimensionless tilting angle decreases with $Q$. As the turning point approaches the photon sphere, its magnitude grows firstly, and then exhibits an oscillatory behavior. Since the physical…

5. Impact of the position effects in the energy calibration of the BULLKID detector physics.ins-det · 24 Sep · 1 hit

   …and coherent elastic neutrino-nucleus scattering. Energy calibration can be performed using optical LED photon bursts, which are absorbed within the first few hundred nanometers of the substrate. An energy…

6. Exceptional Gamma-Ray Flaring Activity of the Blazar S4 0954+65 in Early 2025 astro-ph.HE · 24 Sep · 2 hits

   …acceleration during the active state. A similar spectral trend is also observed in the X-ray band, where the photon index is anti-correlated with flux. During the major $\gamma$-ray flare, VLBA images reveal the…

7. Modelling dynamic systems transfer functions from events in computational neuromorphic imaging cs.CV · 24 Sep · 2 hits

   …the results to the specified MTF, we identify the context where each probe is most relevant. We consider how photon-noise and cross-array threshold mismatch effects the analytical accuracy of the probe-inverse. Results…

8. 100 million photons per second from a single organic molecule quant-ph · 24 Sep · 7 hits

   At cryogenic temperatures, organic single-photon sources (SPSs) offer Fourier-limited emission, virtually unlimited photostability, and emission…